Epson Stylus Pro 4800 Portrait Edition, Service Manual

Page: 198 / 506

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Troubleshooting Troubleshooting Based on Your Printout 198
SMUDGED OR MARRED PRINTOUT (REVERSE SIDE)
If smudging or marring of the paper back surface with ink occurs, the following
items should be checked.
1. Check if the paper is bent or curled, and replace the paper with new one if
abnormal.
2. Check to see if there isn't ink adhering to the paper feed path. If there is ink
adhering, it should be wiped off.
„
PF Roller surface
„
Front Eject Paper Guide surface
„
Rear Paper Guide surface (including switching ribs)
„
Paper Eject Roller surface
3. Check if ink absorbing sponge for borderless printing, and correct if it is
abnormal.
„
Deformation
„
Embossment (installation failure)
„
Accumulation of ink
WHITE OR BLACK BANDING IN THE CARRIAGE RUNNING DIRECTION
If white or black banding (uneven density) in parallel with the Carriage Unit
running direction appears on your printout, check the following points:
1. Nozzle Check Pattern Printing (p.59)
Execute Nozzle Check Pattern printing in the panel setting menu. If dot
missing is found, perform the head cleaning or initial ink charge by
following method
„
"Cleaning" (p.412) of adjustment program.
„
"Power Cleaning" (p.79) in Panel Setting Mode.
„
"Initial Ink Charge" (p.412) of adjustment program.
2. Adjustment
If dot missing is not found, perform the following adjustment and check for
improvement.
„
Check Alignment (p.437)
If it has trouble, execute "Power Cleaning" (p.79) or "Initial Ink
Charge" (p.412) .
„
1000mm Feed Adjustment (p.407)
C A U T I O N
If the user's paper size setting is not correct when "PPR SIZE
CHK" / "PPR ALIGN CHK" of panel setting menu has been
set to OFF, then printing will be done onto platen surface.